Looking for a grommet for a Lucas 35D Distributor

[3xpendable]

I've asked the Distributor Doctor, looked on various V8 diizzy diagrams but can't find what I'm looking for, so HELP!

Have a look at the picture below, what I'm after is the little rubber grommet for the vacuum advance shaft hole, it's in the lower left of the body in this image:



The later vacuum units were flush with the distributor body so didn't need this grommet, so, anyone have any udea where I can get one?

[megadethmaniac]

shouldn`t that head off to the carb to advance / retard ignition depending on throttle position / pressure on the intake ?

[3xpendable]

Yes, the end of the diaphragm, would but I'm talking about the grommet between the vacuum unit and the dist body